Method and apparatus for repairing ruptures in underground conduits
US4995761A · kind A · utility
56Cited by
8References
21Claims
0Family size
Inventor
Key dates
| Filing date | Aug 23, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Aug 23, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/163
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus and method are disclosed for repairing ruptures in underground conduits. An inflatable bladder and a flexible sleeve that is wrapped about at least a portion of the bladder are introduced into a conduit proximate a rupture therein. The bladder is inflated to urge the sleeve into engagement with the conduit such that the sleeve covers the rupture. The sleeve includes an adhesive bonding substance that adheres the sleeve to the conduit and is hardenable to bond the sleeve to the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.